20. continuity test
b. IPX7 protection
d. protected from overcurrent
c. one may work ‘live’
c. Identify from the list below the test which used verify that all fuses,
circuit breakers and switches are connected the line conductor:
a. only instructed and skilled people may work ‘live’. functional test
d. protected additionally RCD
d. State the advantages conduit trunking and tray cable enclosure
system for commercial installation such shopping centre.
25. Compare PVC/SWA cables with cables and give their advantages,
disadvantages and typical applications. the industrial type
b. Every caravan pitch must have least one 16A socket outlet for
connection caravan. Use sketch with notes explanation show how mini-trunking and
skirting trunking could used contain all the electrical supplies a
school’s computing classroom. polarity test. Zone protection. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V system.
23.
26. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V cable sheath supply. All final circuits bathroom, both power and lighting, must have:
a. only competent people may work ‘live’
d. everyone may work ‘live’
b. The Electricity Work Regulations state that:
a. RCD protection
c.
27. overcurrent protection
b.
22.
. The socket outlet must be:
a.
24.365
U W
6 6
2 2
C1
L1 C1
2
C3
4
5
6
To phase supply
To phase motor
19. earth fault loop impedance
c. buried depth 600mm.
21
